<?php
   if(!isset($_REQUEST['frame']))
       include('modules/check.php');
    else   
      switch($_REQUEST['frame']){
          case "check":
                   include('modules/check.php');
                   break;
          case "connect":
                   include('modules/connect.php');
                   break;
          case "account":
                   include('modules/account.php');
                   break; 
          case "configuration":
                   include('modules/configuration.php');
                   break;   
          case "finish":
                   include('modules/finish.php');
                   break;                                                                                 
          default:
                   include('modules/check.php');
                   break;                
   }